The Zhu and Meng families have been close family friends for generations. Zhu Lingyu and Meng Ke have known each other since childhood and have long been engaged. Everyone around them believes they will eventually marry. Only Zhu Lingyu knows that Meng Ke has always held a special place in his heart for another woman. She keeps hoping he will eventually forget that person and make room in his heart for her. Then one day, a cheeky teenage boy about her age appears before her, calls her "Mom," and claims to be her future son! Her future husband turns out not to be Meng Ke, but Zhou Chenghuan, his best friend! How can that be? How could she ever fall in love with someone she hates? Determined to distance herself from him, Zhu Lingyu has no idea that the sharp-tongued man has already fallen deeply and helplessly in love with her.